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Hexagon nut with clamping piece
ISO 7040, steel 10, zinc-nickel, black
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Fasteners with a zinc-plated chromium (VI)-free zinc-nickel black coating (ZNBHL) are suitable for applications with a high risk of corrosion. The coating comprises a zinc-nickel alloy layer and a sealing coat (top coat with integrated lubricating particles).
Corrosion resistance:
- Diameter ≥ M2 – 360h*
- Diameter ≥ M4 – 480h*
- Diameter ≥ M10 – 720h*
- *No base metal corrosion at points without thread in salt spray mist testing according to DIN EN ISO 9227 NSS
Overview of advantages:
- Corrosion resistance of up to 720 hours against base metal corrosion in accordance with DIN EN ISO 9227 NSS
- Chrome(VI)-free
- Adjusted friction coefficient range from 0.09μ - 0.14μ due to top coat with integrated lubricating particles
- Thermal capacity up to 120°C
- Even coating distribution
- Functional and decorative
ISO 7040 replaces DIN 982 | There is some limited similarity | Thread M7, M18, M22 removed | Thread M3, M4, M30 and M36 added | Nut height changed | Width across flats changed for thread M10, M12 and M14 to 16, 18 and 21 mm | Fine thread included in ISO 10512 | Strength class 12 removed | ISO 7040 applies to the strength classes 5, 8, 10.
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